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FFmpeg/libavcodec/vaapi_encode_mjpeg.c
wm4 b945fed629 avcodec: add metadata to identify wrappers and hardware decoders 
Explicitly identify decoder/encoder wrappers with a common name. This
saves API users from guessing by the name suffix. For example, they
don't have to guess that "h264_qsv" is the h264 QSV implementation, and
instead they can just check the AVCodec .codec and .wrapper_name fields.

Explicitly mark AVCodec entries that are hardware decoders or most
likely hardware decoders with new AV_CODEC_CAPs. The purpose is allowing
API users listing hardware decoders in a more generic way. The proposed
AVCodecHWConfig does not provide this information fully, because it's
concerned with decoder configuration, not information about the fact
whether the hardware is used or not.

AV_CODEC_CAP_HYBRID exists specifically for QSV, which can have software
implementations in case the hardware is not capable.

Based on a patch by Philip Langdale <philipl@overt.org>.

Merges Libav commit 47687a2f8a.
2017-12-14 19:37:56 +01:00

433 lines
15 KiB
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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <va/va.h>
#include <va/va_enc_jpeg.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
#include "avcodec.h"
#include "internal.h"
#include "jpegtables.h"
#include "mjpeg.h"
#include "put_bits.h"
#include "vaapi_encode.h"
// Standard JPEG quantisation tables, in zigzag order.
static const unsigned char vaapi_encode_mjpeg_quant_luminance[64] = {
16, 11, 12, 14, 12, 10, 16, 14,
13, 14, 18, 17, 16, 19, 24, 40,
26, 24, 22, 22, 24, 49, 35, 37,
29, 40, 58, 51, 61, 60, 57, 51,
56, 55, 64, 72, 92, 78, 64, 68,
87, 69, 55, 56, 80, 109, 81, 87,
95, 98, 103, 104, 103, 62, 77, 113,
121, 112, 100, 120, 92, 101, 103, 99,
};
static const unsigned char vaapi_encode_mjpeg_quant_chrominance[64] = {
17, 18, 18, 24, 21, 24, 47, 26,
26, 47, 99, 66, 56, 66, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
};
typedef struct VAAPIEncodeMJPEGContext {
int quality;
int component_subsample_h[3];
int component_subsample_v[3];
VAQMatrixBufferJPEG quant_tables;
VAHuffmanTableBufferJPEGBaseline huffman_tables;
} VAAPIEncodeMJPEGContext;
static av_cold void vaapi_encode_mjpeg_copy_huffman(unsigned char *dst_lengths,
unsigned char *dst_values,
const unsigned char *src_lengths,
const unsigned char *src_values)
{
int i, mt;
++src_lengths;
mt = 0;
for (i = 0; i < 16; i++)
mt += (dst_lengths[i] = src_lengths[i]);
for (i = 0; i < mt; i++)
dst_values[i] = src_values[i];
}
static av_cold void vaapi_encode_mjpeg_init_tables(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
VAQMatrixBufferJPEG *quant = &priv->quant_tables;
VAHuffmanTableBufferJPEGBaseline *huff = &priv->huffman_tables;
int i;
quant->load_lum_quantiser_matrix = 1;
quant->load_chroma_quantiser_matrix = 1;
for (i = 0; i < 64; i++) {
quant->lum_quantiser_matrix[i] =
vaapi_encode_mjpeg_quant_luminance[i];
quant->chroma_quantiser_matrix[i] =
vaapi_encode_mjpeg_quant_chrominance[i];
}
huff->load_huffman_table[0] = 1;
vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[0].num_dc_codes,
huff->huffman_table[0].dc_values,
avpriv_mjpeg_bits_dc_luminance,
avpriv_mjpeg_val_dc);
vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[0].num_ac_codes,
huff->huffman_table[0].ac_values,
avpriv_mjpeg_bits_ac_luminance,
avpriv_mjpeg_val_ac_luminance);
memset(huff->huffman_table[0].pad, 0, sizeof(huff->huffman_table[0].pad));
huff->load_huffman_table[1] = 1;
vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[1].num_dc_codes,
huff->huffman_table[1].dc_values,
avpriv_mjpeg_bits_dc_chrominance,
avpriv_mjpeg_val_dc);
vaapi_encode_mjpeg_copy_huffman(huff->huffman_table[1].num_ac_codes,
huff->huffman_table[1].ac_values,
avpriv_mjpeg_bits_ac_chrominance,
avpriv_mjpeg_val_ac_chrominance);
memset(huff->huffman_table[1].pad, 0, sizeof(huff->huffman_table[1].pad));
}
static void vaapi_encode_mjpeg_write_marker(PutBitContext *pbc, int marker)
{
put_bits(pbc, 8, 0xff);
put_bits(pbc, 8, marker);
}
static int vaapi_encode_mjpeg_write_image_header(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAEncPictureParameterBufferJPEG *vpic = pic->codec_picture_params;
VAEncSliceParameterBufferJPEG *vslice = slice->codec_slice_params;
VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
PutBitContext pbc;
int t, i, quant_scale;
init_put_bits(&pbc, data, *data_len);
vaapi_encode_mjpeg_write_marker(&pbc, SOI);
// Quantisation table coefficients are scaled for quality by the driver,
// so we also need to do it ourselves here so that headers match.
if (priv->quality < 50)
quant_scale = 5000 / priv->quality;
else
quant_scale = 200 - 2 * priv->quality;
for (t = 0; t < 2; t++) {
int q;
vaapi_encode_mjpeg_write_marker(&pbc, DQT);
put_bits(&pbc, 16, 3 + 64); // Lq
put_bits(&pbc, 4, 0); // Pq
put_bits(&pbc, 4, t); // Tq
for (i = 0; i < 64; i++) {
q = i[t ? priv->quant_tables.chroma_quantiser_matrix
: priv->quant_tables.lum_quantiser_matrix];
q = (q * quant_scale) / 100;
if (q < 1) q = 1;
if (q > 255) q = 255;
put_bits(&pbc, 8, q);
}
}
vaapi_encode_mjpeg_write_marker(&pbc, SOF0);
put_bits(&pbc, 16, 8 + 3 * vpic->num_components); // Lf
put_bits(&pbc, 8, vpic->sample_bit_depth); // P
put_bits(&pbc, 16, vpic->picture_height); // Y
put_bits(&pbc, 16, vpic->picture_width); // X
put_bits(&pbc, 8, vpic->num_components); // Nf
for (i = 0; i < vpic->num_components; i++) {
put_bits(&pbc, 8, vpic->component_id[i]); // Ci
put_bits(&pbc, 4, priv->component_subsample_h[i]); // Hi
put_bits(&pbc, 4, priv->component_subsample_v[i]); // Vi
put_bits(&pbc, 8, vpic->quantiser_table_selector[i]); // Tqi
}
for (t = 0; t < 4; t++) {
int mt;
unsigned char *lengths, *values;
vaapi_encode_mjpeg_write_marker(&pbc, DHT);
if ((t & 1) == 0) {
lengths = priv->huffman_tables.huffman_table[t / 2].num_dc_codes;
values = priv->huffman_tables.huffman_table[t / 2].dc_values;
} else {
lengths = priv->huffman_tables.huffman_table[t / 2].num_ac_codes;
values = priv->huffman_tables.huffman_table[t / 2].ac_values;
}
mt = 0;
for (i = 0; i < 16; i++)
mt += lengths[i];
put_bits(&pbc, 16, 2 + 17 + mt); // Lh
put_bits(&pbc, 4, t & 1); // Tc
put_bits(&pbc, 4, t / 2); // Th
for (i = 0; i < 16; i++)
put_bits(&pbc, 8, lengths[i]);
for (i = 0; i < mt; i++)
put_bits(&pbc, 8, values[i]);
}
vaapi_encode_mjpeg_write_marker(&pbc, SOS);
av_assert0(vpic->num_components == vslice->num_components);
put_bits(&pbc, 16, 6 + 2 * vslice->num_components); // Ls
put_bits(&pbc, 8, vslice->num_components); // Ns
for (i = 0; i < vslice->num_components; i++) {
put_bits(&pbc, 8, vslice->components[i].component_selector); // Csj
put_bits(&pbc, 4, vslice->components[i].dc_table_selector); // Tdj
put_bits(&pbc, 4, vslice->components[i].ac_table_selector); // Taj
}
put_bits(&pbc, 8, 0); // Ss
put_bits(&pbc, 8, 63); // Se
put_bits(&pbc, 4, 0); // Ah
put_bits(&pbc, 4, 0); // Al
*data_len = put_bits_count(&pbc);
flush_put_bits(&pbc);
return 0;
}
static int vaapi_encode_mjpeg_write_extra_buffer(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
int index, int *type,
char *data, size_t *data_len)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
if (index == 0) {
// Write quantisation tables.
if (*data_len < sizeof(priv->quant_tables))
return AVERROR(EINVAL);
*type = VAQMatrixBufferType;
memcpy(data, &priv->quant_tables,
*data_len = sizeof(priv->quant_tables));
} else if (index == 1) {
// Write huffman tables.
if (*data_len < sizeof(priv->huffman_tables))
return AVERROR(EINVAL);
*type = VAHuffmanTableBufferType;
memcpy(data, &priv->huffman_tables,
*data_len = sizeof(priv->huffman_tables));
} else {
return AVERROR_EOF;
}
return 0;
}
static int vaapi_encode_mjpeg_init_picture_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAEncPictureParameterBufferJPEG *vpic = pic->codec_picture_params;
VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
vpic->reconstructed_picture = pic->recon_surface;
vpic->coded_buf = pic->output_buffer;
vpic->picture_width = avctx->width;
vpic->picture_height = avctx->height;
vpic->pic_flags.bits.profile = 0;
vpic->pic_flags.bits.progressive = 0;
vpic->pic_flags.bits.huffman = 1;
vpic->pic_flags.bits.interleaved = 0;
vpic->pic_flags.bits.differential = 0;
vpic->sample_bit_depth = 8;
vpic->num_scan = 1;
vpic->num_components = 3;
vpic->component_id[0] = 1;
vpic->component_id[1] = 2;
vpic->component_id[2] = 3;
priv->component_subsample_h[0] = 2;
priv->component_subsample_v[0] = 2;
priv->component_subsample_h[1] = 1;
priv->component_subsample_v[1] = 1;
priv->component_subsample_h[2] = 1;
priv->component_subsample_v[2] = 1;
vpic->quantiser_table_selector[0] = 0;
vpic->quantiser_table_selector[1] = 1;
vpic->quantiser_table_selector[2] = 1;
vpic->quality = priv->quality;
pic->nb_slices = 1;
return 0;
}
static int vaapi_encode_mjpeg_init_slice_params(AVCodecContext *avctx,
VAAPIEncodePicture *pic,
VAAPIEncodeSlice *slice)
{
VAEncPictureParameterBufferJPEG *vpic = pic->codec_picture_params;
VAEncSliceParameterBufferJPEG *vslice = slice->codec_slice_params;
int i;
vslice->restart_interval = 0;
vslice->num_components = vpic->num_components;
for (i = 0; i < vslice->num_components; i++) {
vslice->components[i].component_selector = i + 1;
vslice->components[i].dc_table_selector = (i > 0);
vslice->components[i].ac_table_selector = (i > 0);
}
return 0;
}
static av_cold int vaapi_encode_mjpeg_configure(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeMJPEGContext *priv = ctx->priv_data;
priv->quality = avctx->global_quality;
if (priv->quality < 1 || priv->quality > 100) {
av_log(avctx, AV_LOG_ERROR, "Invalid quality value %d "
"(must be 1-100).\n", priv->quality);
return AVERROR(EINVAL);
}
// Hack: the implementation calls the JPEG image header (which we
// will use in the same way as a slice header) generic "raw data".
// Therefore, if after the packed header capability check we have
// PACKED_HEADER_RAW_DATA available, rewrite it as
// PACKED_HEADER_SLICE so that the header-writing code can do the
// right thing.
if (ctx->va_packed_headers & VA_ENC_PACKED_HEADER_RAW_DATA) {
ctx->va_packed_headers &= ~VA_ENC_PACKED_HEADER_RAW_DATA;
ctx->va_packed_headers |= VA_ENC_PACKED_HEADER_SLICE;
}
vaapi_encode_mjpeg_init_tables(avctx);
return 0;
}
static const VAAPIEncodeType vaapi_encode_type_mjpeg = {
.priv_data_size = sizeof(VAAPIEncodeMJPEGContext),
.configure = &vaapi_encode_mjpeg_configure,
.picture_params_size = sizeof(VAEncPictureParameterBufferJPEG),
.init_picture_params = &vaapi_encode_mjpeg_init_picture_params,
.slice_params_size = sizeof(VAEncSliceParameterBufferJPEG),
.init_slice_params = &vaapi_encode_mjpeg_init_slice_params,
.slice_header_type = VAEncPackedHeaderRawData,
.write_slice_header = &vaapi_encode_mjpeg_write_image_header,
.write_extra_buffer = &vaapi_encode_mjpeg_write_extra_buffer,
};
static av_cold int vaapi_encode_mjpeg_init(AVCodecContext *avctx)
{
VAAPIEncodeContext *ctx = avctx->priv_data;
ctx->codec = &vaapi_encode_type_mjpeg;
ctx->va_profile = VAProfileJPEGBaseline;
ctx->va_entrypoint = VAEntrypointEncPicture;
ctx->va_rt_format = VA_RT_FORMAT_YUV420;
ctx->va_rc_mode = VA_RC_CQP;
// The JPEG image header - see note above.
ctx->va_packed_headers =
VA_ENC_PACKED_HEADER_RAW_DATA;
ctx->surface_width = FFALIGN(avctx->width, 8);
ctx->surface_height = FFALIGN(avctx->height, 8);
return ff_vaapi_encode_init(avctx);
}
static const AVCodecDefault vaapi_encode_mjpeg_defaults[] = {
{ "global_quality", "80" },
{ NULL },
};
static const AVClass vaapi_encode_mjpeg_class = {
.class_name = "mjpeg_vaapi",
.item_name = av_default_item_name,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_mjpeg_vaapi_encoder = {
.name = "mjpeg_vaapi",
.long_name = NULL_IF_CONFIG_SMALL("MJPEG (VAAPI)"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MJPEG,
.priv_data_size = sizeof(VAAPIEncodeContext),
.init = &vaapi_encode_mjpeg_init,
.encode2 = &ff_vaapi_encode2,
.close = &ff_vaapi_encode_close,
.priv_class = &vaapi_encode_mjpeg_class,
.capabilities = AV_CODEC_CAP_HARDWARE,
.defaults = vaapi_encode_mjpeg_defaults,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_VAAPI,
AV_PIX_FMT_NONE,
},
.wrapper_name = "vaapi",
};
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